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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
53 hedge funds and large institutions have $342M invested in Mersana Therapeutics in 2018 Q2 according to their latest regulatory filings, with 11 funds opening new positions, 20 increasing their positions, 12 reducing their positions, and 14 closing their positions.
New
Increased
Maintained
Reduced
Closed
67% more repeat investments, than reductions
Existing positions increased: 20 | Existing positions reduced: 12
33% more funds holding in top 10
Funds holding in top 10: 3 → 4 (+1)
16% more capital invested
Capital invested by funds: $295M → $342M (+$46.3M)
0.05% more ownership
Funds ownership: 3.29% → 3.34% (+0.05%)
5% less funds holding
Funds holding: 56 → 53 (-3)
21% less first-time investments, than exits
New positions opened: 11 | Existing positions closed: 14
Holders
53
Holders Change
-3
Holders Change %
-5.36%
% of All Funds
1.21%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.09%
New
11
Increased
20
Reduced
12
Closed
14
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–
Top Buyers
| 1 |
GTC
Ghost Tree Capital
New York
|
+$5.65M |
| 2 |
ACH
ArrowMark Colorado Holdings
Denver,
Colorado
|
+$5.59M |
| 3 |
BlackRock
New York
|
+$3.31M |
| 4 |
Millennium Management
New York
|
+$2.16M |
| 5 |
Balyasny Asset Management
Chicago,
Illinois
|
+$1.45M |
